🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Specific Model: 316 Codes Engine Codes: M10 (e.g., M10B18), M40 (later models may have M40B18) 👋 Introduction Market Position Era: Classic sport sedan, known for driving dynamics and build quality Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75 Key Features Driving Dynamics: Rear-wheel drive, independent suspension, near 50/50 weight distribution Design: Iconic Bertone design, compact and sporty proportions Manual Value Proposition Professionals: Direct equivalent to manuals used by BMW dealerships and independent workshops 📋 Manual Details Coverage Areas Coverage Scope: All models, all repairs A-Z Page Count Estimated Page Count: Comprehensive, typically 500+ pages for a full workshop manual of this era Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system (carburetor/injection), cooling system, exhaust system, ignition system Transmission: Manual and automatic transmission repair, clutch, driveshafts, differentials Chassis: Suspension (front/rear), steering system, braking system (front/rear, ABS if applicable) Electrical: Wiring diagrams, lighting, starting and charging system, instrumentation, body electrical components, control units Body: Body panels, doors, windows, interior trim, bumpers, glass, convertible top mechanisms Procedures Included Maintenance: Routine inspections, fluid changes, filter replacements, spark plug replacement, belt tensioning Diagnostics: Troubleshooting guides, fault finding procedures for mechanical and electrical systems Repair: Engine overhaul, transmission rebuild, brake component replacement, suspension linkage repair, electrical component replacement Adjustment: Valve clearance adjustment, ignition timing, idle speed adjustment, clutch adjustment Special Tools: Identification and usage of BMW-specific and general repair tools Bodywork: Panel replacement, dent repair, door alignment, glass replacement procedures Interior: Seat removal, dashboard disassembly, trim panel replacement, heating and ventilation system service Technical Depth Depth: Complete overhaul and rebuild procedures, in-depth diagnostic charts, detailed torque specifications Engine Rebuild: Detailed steps for piston ring replacement, bearing replacement, cylinder head removal and overhaul, crankshaft installation Electrical Diagnostics: Comprehensive wiring diagrams for all circuits, troubleshooting flowcharts for common electrical faults Manual Completeness Scope: Covers all aspects of vehicle maintenance, repair, and diagnostics, intended for professional use. 📊 Manual Specifications File Format Quality: High-resolution PDF, typically searchable text and clear diagrams Print Quality Printability: Designed for clear printing of individual pages or sections Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Cylinder Displacement: 1.8 Liters (approx. 1766cc for M10B18) Bore X Stroke: M10B18: 89.0 mm x 71.0 mm Compression Ratio: Typically around 8.8:1 to 9.5:1 depending on specific variant Performance Horsepower: Approximately 90-102 hp (DIN) at 5500-5800 rpm Torque: Approximately 140-150 Nm (103-111 lb-ft) at 3000-3500 rpm Fuel System Fuel Delivery: Carburetor (e.g., Pierburg 2B4 or Solex) for early models, Bosch L-Jetronic or Motronic fuel injection for later models/variants Fuel Type: Unleaded gasoline (RON 95 or higher) Ignition System Ignition Type: Distributor-based electronic ignition (e.g., Bosch) Cooling System Coolant Type: Ethylene glycol based antifreeze with corrosion inhibitors (BMW Blue or equivalent) 🔧 Transmission Standard Type: 4-speed manual transmission Optional Type: 3-speed or 4-speed automatic transmission (ZF) Features Clutch: Single dry plate, hydraulic actuation Transmission Fluid: Manual: API GL-4, SAE 75W-90 or 80W-90. Automatic: ATF Dexron II or equivalent. 📐 Dimensions Exterior Length: Approx. 4340 mm (170.9 in) Width: Approx. 1675 mm (66.0 in) Height: Approx. 1380 mm (54.3 in) Wheelbase: Approx. 2570 mm (101.2 in) Weights Curb Weight: Approx. 1100-1250 kg (2425-2755 lbs) depending on body style and transmission 🛡️ Safety Features Ratings Euro Ncap: N/A (Pre-dates Euro NCAP standardized testing) Active Features Brakes: Front: Ventilated discs. Rear: Drums (or discs on some later/sportier variants). ABS optional on later models. Steering: Recirculating ball power steering (optional from 1985 onwards, standard on some later models) Passive Features Seatbelts: Three-point inertia reel seatbelts front and rear (standard) Structure: Reinforced safety cell, crumple zones 💡 Technology Features Infotainment Audio System: Optional cassette player, FM/AM radio, often with basic amplifier options Driver Assistance ABS: Anti-lock Braking System available as an option on later models Connectivity Features: Basic automotive technology of the era; no integrated mobile or advanced connectivity 🔧 Maintenance Service Intervals Oil Change: Every 10,000-15,000 km or 12 months (depending on driving conditions and oil used) Air Filter: Check every 10,000-15,000 km, replace as needed or every 30,000-50,000 km Spark Plugs: Replace every 30,000-50,000 km (depending on type) Timing Belt: M10 engine is chain-driven. M40 (if applicable) is belt-driven, typically 60,000-80,000 km replacement interval. Fluid Specifications Engine Oil: API SG/SH or higher, SAE 10W-40 or 15W-40 (check manual for exact BMW approval or viscosity preference) Coolant: BMW Blue coolant (G48 type) or equivalent, mixed 50/50 with distilled water Brake Fluid: DOT 4 Known Issues Rust: Common rust spots: wheel arches, rocker panels, jacking points, trunk floor, sunroof drain areas Electrical: Fraying wiring harnesses (especially under the hood), failing dashboard clusters, headlamp switch issues Cooling System: Plastic coolant expansion tanks...